KR100976217B1 - A modulator of brake control system - Google Patents

Abstract

The present invention provides a modulator of a brake control system that can be made compact by reducing the width of the block housing and reducing its overall size. The block housing of the modulator has a first bore row formed on a first surface and comprising a first valve bore on which a NO type solenoid valve is inserted and a second valve bore on which an NC type solenoid valve is inserted, and a first bore row formed on the first surface. A second bore row disposed alternately with the first valve bore and the second valve bore of the first bore row and a lower portion of the bore row, and formed through the corresponding surface of the first surface, and penetrating generally at a central position of the bottom of the second bore row; A third bore array comprising a motor bore and a pump bore formed through the second and corresponding surfaces of the block housing, and a fourth bore formed through the third surface and disposed under the third bore array. Heat is formed.

Description

Modulator of brake control system

1 is a hydraulic circuit diagram of a general brake control system.

FIG. 2 is a schematic diagram showing a modulator according to one embodiment applied to the system of FIG. 1. FIG.

3 is a schematic diagram showing a modulator according to another embodiment applied to the system of FIG.

4 is a perspective view schematically showing a modulator according to one embodiment of a brake control system according to the invention;

FIG. 5 is a schematic diagram of the modulator of FIG. 4. FIG.

6 is a perspective view schematically showing a modulator according to another embodiment of a brake control system according to the present invention;

7 is a schematic view of the modulator of FIG.

♣ Explanation of symbols for the main parts of the drawing ♣

10: block housing 10A to 10D: first to fourth bore row

11-13: 1st-3rd surface 14, 15: 1st and 2nd valve bore

16: motor bore 17: pump bore

The present invention relates to a modulator of a brake control system, and more particularly, to a brake control system that can be reduced in size and compacted by suitably arranging or arranging each solenoid valve, motor, and pump constituting the brake control system. It relates to the modulator of.

The vehicle is essentially equipped with a brake for braking and speed regulation. On the other hand, in recent years, various brake aids have been used to expand the powerful and stable braking performance according to the high performance of the vehicle and to secure sufficient braking force and stability even under various conditions. Such a device includes, for example, an anti-lock brake system (ABS) for electronically controlling the braking pressure of the wheel brake during braking to prevent slippage, and a TCS for preventing excessive slip of the driving wheel during rapid acceleration or acceleration of the vehicle. (Traction Control System) and an electronically controlled brake system with ABCS (Active Brake Control System) function to secure the vehicle's driving safety by controlling the braking pressure according to the traveling speed of the vehicle and the angle of rotation of the steering wheel.

As shown in FIG. 1, the brake control system includes a brake pedal 1 operated by a driver during braking, and a booster for generating brake hydraulic pressure by amplifying a force transmitted from the pedal 1. 1a) and master cylinder 1b. Then, a plurality of normally open solenoid valves (hereinafter referred to as NO type solenoid valves) 3 for supplying the generated brake hydraulic pressure to the wheel cylinder 2 and the normally closed solenoid valves (hereinafter referred to as "NO" solenoid valves). 4), a low pressure accumulator (LPA) 5 in which the brake fluid discharged from the wheel cylinder 2 is temporarily stored, and a brake fluid stored in the low pressure accumulator 5 to pump the master. Motor 6 and pump 7 for reflux to cylinder 1b or wheel cylinder 2, and high pressure accumulator 8 for damping the pulsation of brake fluid pressure returned when the pump 7 is driven are provided. Each of these components is compactly embedded in one modulator 9.

Referring to one embodiment of the modulator 9, each component is shown in FIG. 2, as shown in the drawing, four NO-type solenoid valve bores 3a having a relatively large diameter are arranged in a line at the top. Four NC solenoid valve bores 4a having a relatively small diameter are disposed at the lower portion thereof, and a motor bore 6a is disposed at the lower center thereof, and a pump bore 7a is disposed at both sides of the motor bore. Is arranged to form a modulator.

In addition, according to another conventional embodiment, as shown in FIG. 3, as shown in the drawing, four NO-type solenoid valve bores 3a having a relatively large diameter are arranged in a line and have a lower center thereof. The motor bore 6a is disposed in the pump bore, and the pump bore 7a is disposed on both sides of the motor bore. Next, four NC-type solenoid valve bores 4a having a relatively small diameter are arranged in a row under the modulator. To form.

However, some problems have been shown in the structure of such a modulator. That is, in the case where NO type solenoid valves and NC type solenoid valves having different diameters are arranged in parallel with each other, even if the diameter of one type of solenoid is small, the width of the block housing of the modulator is determined by the solenoid valve having a large diameter. As a result, there is a problem that the size of the entire modulator becomes large.

In addition, due to the increase in the overall size can not achieve excellent compaction, there is a problem that the weight is increased, as well as the manufacturing cost is increased.

The present invention has been invented to solve the above problems, and an object of the present invention is to provide a modulator of a brake control system that can reduce the overall size and achieve excellent compactness.

Another object of the present invention is to provide a modulator of a brake control system which can reduce the width and size of the block housing and can reduce the weight and manufacturing cost.

In order to solve these objects, the present invention provides a plurality of NO type (normally open) solenoid valves and NC type (normally closed) having different diameters to supply brake hydraulic pressure to a wheel cylinder. ) A low pressure accumulator in which the brake fluid discharged from the wheel cylinder is temporarily stored, a motor and a pump for pumping the brake fluid stored in the low pressure accumulator and returning it to a master cylinder or a wheel cylinder, a traction control system and an ESP The first surface and its corresponding surface, at right angles to the first surface and at right angles to the second surface and its corresponding surface, and on the first and second surfaces to form an electronic control valve for controlling the A modulator of a brake control system having a cube block housing having a face and a corresponding face, wherein the block housing is located under the block. A first bore array formed on the first surface of the housing and comprising a first valve bore for inserting the NO solenoid valve and a second valve bore for inserting the NC solenoid valve; A second bore row formed on the first surface of the block housing and disposed alternately with the first valve bore and the second valve bore of the first bore row below the first bore row; A motor bore formed through a corresponding surface of the first surface of the block housing, the motor bore penetrating through a generally central position of the lower portion of the second bore row, and a pump bore formed through the second surface and the corresponding surface of the block housing; A third bore sequence; And a fourth bore row formed through the third surface of the block housing and having an accumulator bore disposed under the third bore row.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

As described above, the brake control system to which the modulator according to the present invention is applied basically has a plurality of normally open solenoid valves (hereinafter, NO-type solenoids) for supplying the modulator 10 and the brake hydraulic pressure to the wheel cylinders. Valve 20) and a normally closed solenoid valve (hereinafter referred to as an NC solenoid valve) 30, and a low pressure accumulator (LPA) 40 in which brake fluid discharged from a wheel cylinder is temporarily stored. ), A motor 50 and a pump 60 for pumping the brake fluid stored in the low pressure accumulator to reflux to the master cylinder or the wheel cylinder, and a plurality of components not shown.

As shown in Figs. 4 and 5, the modulator of the brake control system according to one embodiment of the present invention is basically provided with a block housing 10 of a cube type. The block housing 10 is formed in a rectangular cuboid shape, and has a first face 11 appearing in front in the drawing, a second face 12 appearing laterally and perpendicular to the first face, and a first face and a first face. The third surface 13 is formed at right angles to two surfaces and appears as a lower surface.

The first valve bore 14 and the second valve bore 15 are respectively formed in the upper portion of the first surface 11 of the block housing 10 in alternating up and down directions. Here, the first valve bore 14 is a valve bore in which the NO type solenoid valve 20 having a relatively large diameter is inserted, and the second valve bore 15 has an NC type solenoid valve 30 having a relatively small diameter. Is the valve bore that is inserted.

As a result, the first housing bore 10A, in which two first valve bores 14 and two second valve bores 15 are arranged, is disposed in the block housing 10, and two second valves are conversely located at the bottom thereof. The bore 15 and the two first valve bores 14 are arranged in order to form a second bore row 10B.

And the back facing the first surface 11 of the block housing 10, more specifically, the motor bore 16 that can be inserted into the motor 50 in the generally central position of the lower portion of the second valve bore row 10B is drilled Is formed.

In addition, the pump bore 17 in which the pump 60 connected to the motor 50 is inserted is formed in each of the second surface 12 constituting the side of the block housing 10 and the other side corresponding thereto. . Accordingly, the third bore train 10C in which the pump bore 17 is disposed on both sides of the motor bore 16 is formed.

The accumulator bore 18 in which two low pressure accumulators 40 are connected is formed in the third surface 13 forming the bottom of the block housing 10. Accordingly, the fourth bore row 10D is formed below the block housing 10, more specifically, below the third bore row 10C.

Optionally, between the motor bore 16 and the pump bore 17 and the accumulator bore 18 of the block housing 10, the electronics for controlling the traction control system (TCS) and (ESP), as shown by the dotted lines. A bore 19 may be formed in which the control valve 70 may be arranged.

Of course, a plurality of hydraulic lines L may be perforated on the surface corresponding to the third surface of the block housing 10 to form the upper surface, and may be connected to components such as valves, pumps, and accumulators.

As shown in Figs. 6 and 7, the modulator of the brake control system according to another embodiment of the present invention basically has a cube-shaped block housing 10 as in the first embodiment described above. The block housing 10 is formed in a rectangular cuboid shape, and has a first surface 11 appearing in front in the drawing, a second surface 12 appearing laterally at right angles thereto, a first surface and A third surface 13 is formed at right angles to the second surface and appears as a lower surface.

The first valve bore 14 and the second valve bore 15 are respectively formed in the upper portion of the first surface 11 of the block housing 10 in alternating up and down directions. Here, the first valve bore 14 is a valve bore in which the NO type solenoid valve 20 having a relatively large diameter is inserted, and the second valve bore 15 has an NC type solenoid valve 30 having a relatively small diameter. Is the valve bore that is inserted.

As a result, in the block housing 10, a first bore row 10A in which two second valve bores 15 and two first valve bores 14 are arranged in turn, and two first valves are conversely located below. The bore 14 and the two second valve bores 15 form a second bore row 10B which is arranged in sequence.

And the back facing the first surface 11 of the block housing 10, more specifically, the motor bore 16 that can be inserted into the motor 50 in the generally central position of the lower portion of the second valve bore row 10B is drilled Is formed.

In addition, the pump bore 17 in which the pump 60 connected to the motor 50 is inserted is formed in each of the second surface 12 constituting the side of the block housing 10 and the other side corresponding thereto. . Accordingly, the third bore train 10C in which the pump bore 17 is disposed on both sides of the motor bore 16 is formed.

The accumulator bore 18 in which two low pressure accumulators 40 are connected is formed in the third surface 13 forming the bottom of the block housing 10. Accordingly, the fourth bore row 10D is formed in the lower portion of the block housing 10, more specifically, the lower portion of the third bore row 10C.

Optionally, between the motor bore 16 and the pump bore 17 and the accumulator bore 18 of the block housing 10, the electronics for controlling the traction control system (TCS) and (ESP), as shown by the dotted lines. A bore 19 may be formed in which the control valve 70 may be arranged.

Of course, a plurality of hydraulic lines L may be perforated on the surface corresponding to the third surface of the block housing 10 to form the upper surface, and may be connected to components such as valves, pumps, and accumulators.

Next, the operation of the modulator of the brake control system having the above structure will be described in detail.

The modulator of the brake control system according to the present invention is a NO type solenoid having a relatively large diameter in the first valve bore 14 of the first bore row 10A of the block housing 10 constituting the whole. The valve 20 is inserted, and the NC type solenoid valve 30 having a relatively small diameter is inserted in the second valve bore 15, and also in the first valve bore 14 of the second bore row 10B. Therefore, the NO type solenoid valve 20 having a large diameter is inserted and the NC type solenoid valve 30 having a relatively small diameter is also inserted in the second valve bore 15.

Then, a motor 50 is inserted into the motor bore 16 of the third bore row 10C of the block housing 10 from the rear surface, and a pump 60 is inserted into each pump bore 17 from each side surface. do.

In addition, two low-pressure accumulators 40 are inserted in the fourth bore row 10D of the block housing 10 from the third surface 13 formed of the bottom surface. Optionally, electronic control valves 70 are inserted between the third bore row 10C and the fourth bore row 10D.

As above, the block housing 10 in which the respective components are inserted or mounted may reduce the width W thereof. That is, the first bore row 10A and the second bore row 10B are provided with two NO type solenoid valves 20 and NC type solenoid valves 30 each having relatively different diameters. The NO type solenoid valve 20 and the NC type solenoid valve 30 are provided with valve bores 11 and 12 formed in such a manner that they are staggered or intersected by two so that the actual arrangement width thereof becomes smaller. Accordingly, the actual width of the block housing 10 is reduced, which in turn reduces the overall size of the modulator.

As described in detail above, according to the modulator structure of the brake control system according to the present invention, the NO-type solenoid valve and the NC-type solenoid valve having a different diameter relative to the block housing are installed in such a manner that they cross each other left and right. By forming the valve bore to reduce the width, there is an effect that can reduce the overall size of the modulator.

In addition, it is possible to reduce the overall size, it is possible to achieve a more compact, as well as to reduce the weight and manufacturing costs.

Claims (4)

A plurality of NO solenoid valves and NC solenoid valves having different diameters to supply brake hydraulic pressure to the wheel cylinder, a low pressure accumulator for temporarily storing brake fluid discharged from the wheel cylinder, and a brake fluid stored in the low pressure accumulator And a motor and pump for pumping the pump back to the master cylinder or wheel cylinder, and the plurality of NO and NC solenoid valves, the low pressure accumulator, the cubic block housing to which the motor and the pump are mounted. In the modulator, The block housing is formed on the first surface of the block housing, the first bore array comprising a first valve bore in which the NO-type solenoid valve is inserted and a second valve bore in which the NC-type solenoid valve is inserted; A second bore row formed on the first surface of the block housing and disposed alternately with the first valve bore and the second valve bore of the first bore row below the first bore row; A motor bore formed through a corresponding surface of the first surface of the block housing and penetrating through a generally central position of the lower portion of the second bore row; a second surface and a corresponding surface perpendicular to the first surface of the block housing; A third bore train formed of a pump bore formed in the pump bore; And And a fourth bore row formed through the third surface perpendicular to the first and second surfaces of the block housing and formed with an accumulator bore disposed under the third bore row. Modulator. The modulator of the brake control system according to claim 1, wherein the diameter of the NO type solenoid valve is larger than the diameter of the NC type solenoid. 2. The modulator of the brake control system according to claim 1, wherein a bore in which the traction control system and the electronic control valve for controlling the ESP are arranged is formed between the third and fourth bore rows of the block housing. . The modulator of claim 1, wherein a plurality of flow paths connected to the respective solenoid valves, the pump, and the low pressure accumulator are formed through the surface corresponding to the third surface of the block housing.

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